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Full Discussion: Merge two files by condition
Top Forums Shell Programming and Scripting Merge two files by condition Post 302715037 by Scrutinizer on Saturday 13th of October 2012 03:05:03 PM
Old 10-13-2012
Code:
awk 'NR==FNR{if (!/^\/\*/) A[$1]=$3; next} $1 in A && !/^\/\*/{$3=A[$1]}1' B A

This User Gave Thanks to Scrutinizer For This Post:
mikezang
 

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LEARN ABOUT DEBIAN

flow-merge

flow-merge(1)						      General Commands Manual						     flow-merge(1)

NAME

       flow-merge -- Merge flow files.

SYNOPSIS

       flow-merge [-aghm]  [-b big|little]  [-C comment]  [-d debug_level]  [-o filename]  [-z z_level]  [file|directory ...]

DESCRIPTION

       The  flow-merge	utility processes files and/or directories of files in the flow-tools format.  The resulting merged data set is written to
       the standard output or file specified by -o.  If file is a single dash (`-') or absent, flow-merge  will  read  from  the  standard  input.
       Unlike flow-cat, flow-merge interleaves flow records preserving the relative chronological order.

OPTIONS

       -a	 Do not ignore filenames that begin with tmp.

       -b big|little
		 Byte order of output.

       -C Comment
		 Add a comment.

       -d debug_level
		 Enable debugging.

       -g	 Sort file list by capture start time before processing.

       -h	 Display help.

       -m	 Disable the use of mmap().

       -p	 Preload headers.  Use to preserve meta information such as lost flows.

       -o file	 Write to file instead of the standard out.

       -z z_level
		 Configure compression level to  z_level.  0 is disabled (no compression), 9 is highest compression.

       file|directory...
		 Process the files and/or directory.

EXAMPLES

       Merge all flow files begining with ft-v05.2001-05.01, use flow-print to display the results.

	   flow-merge ft-v05.2001-05-01.* | flow-print

BUGS

       None known.

AUTHOR

       Larry Lidz ellidz@eridu.uchicago.edu

SEE ALSO

       flow-tools(1)

																     flow-merge(1)
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